Abstract
Context
It is important to develop a method to accurately measure controlled force exertion (CFE).
Objectives
This study aimed to examine the effect of maximum grip strength on CFE measured by a sinusoidal waveform in 81 right-handed young males aged 15–29 years.
Methods
On the basis of grip strength measurements, participants were divided into the following three groups: low (males 20; mean age 19.5 years; standard deviation (SD) = 5.0 years), medium (males 41; mean age 22.8 years; SD = 4.2 years), and high (males 20; mean age 23.7 years; SD = 3.4 years). Participants adjusted the submaximal grip strength of the dominant hand with changes in the demand values that were displayed as a sinusoidal waveform with a frequency of 0.1 Hz on a computer screen. The abovementioned test was performed three times with a 1-min interval after one practice trial. Each trial lasted 40 s. The sum of the differences between the demand value and grip exertion strength value for 25 s was considered as the evaluation parameter.
Results
Controlled force exertion values demonstrated insignificant correlations with age and maximum grip strength in all groups (r = 0.07; r = −0.12; p > 0.05). No significant differences were found between CFE mean scores that was adjusted for age and varying maximum grip strength in the three groups (F = 1.95; p > 0.05).
Conclusions
Based on the sinusoidal waveform display, we inferred that maximum grip strength has little effect on CFE evaluation in young males.
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Acknowledgments
This study was supported in part by a grant-in-aid for Scientific Research (project number 20500506) to Y. Nagasawa from the Ministry of Education, Science and Culture of Japan.
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Nagasawa, Y., Demura, S., Takahashi, K. et al. Effect of maximum grip strength on controlled force exertion measured by a computer-generated sinusoidal waveform in young adult males. Sport Sci Health 10, 23–28 (2014). https://doi.org/10.1007/s11332-013-0168-3
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DOI: https://doi.org/10.1007/s11332-013-0168-3